Email:i-trade1@lnjldq.comLiaoning Jinli Electric Power Electrical Appliance Co.,Ltd

Liaoning Jinli Electric Power Electrical Appliance Co.,Ltd

Oil-Immersed On-Load Tap Changer / Oil-Immersed Transformer Switch

Basic Info

  • Model NO.: SYXZZ

  • Connection Method: Y, D

  • Trademark: JINLI TAP CHANGER

  • Specification: IEC CE, ISO

  • HS Code: 8535900090

  • Max Rated Current: 400A

  • Rated Voltage: 35kv

  • Transport Package: Wooden Cases

  • Origin: Liaoning Dandong

Product Description




The tap changer is representing a selector switch of tubular design. The switching principle combines operational features of a diverter switch and of a tap selector.
The tap changer will be fastened to the transformer tank cover by its tap changer head flange (which serves also for connecting the tap changer to the drive shaft and oil compartment to the oil conservator.)
If required, the tap changer may be equipped with a change-over selector. (The design of the tap changer and the nomenclature of its main parts can be seen from the installation drawings in the appendix.)
Tap changer models without change-over selector are available up to 14 or others
These operating instructions contain all information to install and operate the following tap changer models (without/ with change-over selector).
3-phase on-load tap changers for neutral point
3-phase on-load tap changers for any connection
Single-phase on-load tap changers

Designation of the tap changer model

1.1.2 Highest voltage for equipment : 35 kV.
1.1.3 Number of operating positions for tap changer:
Without change-over selector, the number of operating position can be up to 10,12,14 contacts respectively;

1.2 Scope of application
The tap changer is used on power transformer, rectifier transformer and furnace transformer of rated voltage of 110kV and below, rated current up to 500 A, frequency 50 to 60 Hz. The taps of the transformer can be changed by the tap changer on load to regulate the output voltage,which is to ensure it is stablized in the specified range. It is also used to increase or reduce output voltage according to the load requirement for the purpose of regulation line voltage.
1.3 Rated application conditions and requirement
1.3.1 The tap changer is used in oil, the temperature of the oil must not be higher than 100°C or lower than -25°C.
1.3.2 The environmental air temperature of the tap changer must not be higher than 40°C or lower than -25°C
1.3.3 When installing the tap changer on the transformer the perpendicularity with the ground level must not be bigger than 2%.
1.3.4 Any serious dust, explosive or corrosive gases must not be present at the installation site of the OLTC.
1.3.5 The storage place of the tap changer must be dry without moisture.

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